Arizona Certified Nursing Assistant (CNA) Practice Test

Which side should a patient lie on for an enema?

1. Right

2. Left

3. Back

4. Stomach

The correct answer is: Left

Patients typically lie on their left side for an enema procedure, commonly referred to as the left lateral position. This position is preferred because it allows gravity to assist in the flow of the enema solution into the rectum and colon. The anatomy of the colon makes this position particularly effective; when lying on the left side, the descending colon is positioned downward, facilitating the introduction of the solution into the sigmoid colon and promoting better retention of the fluid. Utilizing the left side helps to maximize comfort and effectiveness during the procedure, as well as reducing the risk of complications. It also provides ease of access for the healthcare provider administering the enema. In contrast, lying on the right side does not promote the same gravitational effects on the intestine. The back or stomach positions would also not effectively utilize gravity in the same way, making the left side the optimal choice for this procedure.